1601results about "Thermal non-catalytic cracking" patented technology

Integrated processes and facilities for providing recycled content hydrocarbon products (r-products) from mixed waste plastic are provided. Carbon dioxide capture and energy recovery from one or more process streams described herein increase energy efficiency and help reduce overall environmental impact while producing valuable final products from chemically recycled waste plastic.

It has been discovered that heat energy may be captured from the flue gas from a pyrolysis reactor, which was previously lost due to exhausting. More particularly, it has been discovered that residual heat energy from pyrolysis flue gas in a chemical recycling facility may be used to preheat waste plastic streams and provide heat for waste plastic pyrolysis. Consequently, the pyrolysis processes and systems described herein may obtain a lower carbon footprint.

Chemical recycling facilities for processing mixed plastic waste are provided herein. Such facilities have the capability of processing mixed plastic waste streams and utilize a variety of recycling facilities, such as, for example, solvolysis facility, a pyrolysis facility, a cracker facility, a partial oxidation gasification facility, an energy generation / energy production facility, and a solidification facility. Streams from one or more of these individual facilities may be used as feed to one or more of the other facilities, thereby maximizing recovery of valuable chemical components and minimizing unusable waste streams.

It has been discovered that heat energy may be captured from various process streams in a chemical recycling facility, such as the pyrolysis effluent streams, pyrolysis gas streams, and pyrolysis flue gas streams. More particularly, it has been discovered that residual heat energy from various process streams in a chemical recycling facility may be used to preheat waste plastic streams and provide heat for waste plastic pyrolysis. Consequently, the pyrolysis processes and systems described herein may obtain a lower carbon footprint.

Electrical power derived from a renewable energy source is used to perform water electrolysis to produce oxygen and hydrogen. A flue gas and heat are produced from combustion of a fuel using at least a portion of the oxygen generated by electrolysis. A feed stream including hydrocarbon oil is hydroprocessed using the generated heat and at least a portion of the hydrogen generated by electrolysis to produce a product including a saturated hydrocarbon. At least a portion of the flue gas is hydrogenated using at least a portion of the hydrogen generated by electrolysis to produce a second product stream including a hydrocarbon, an oxygenate, or both.

A method for producing hydrocarbons includes subjecting a first feed stream to steam cracking to obtain a first product stream, and subjecting an ethane-containing second feed stream to oxidative dehydrogenation to obtain a second product stream. A portion of the first product stream is subjected to a deethanization or a depropanization separately from the second product to obtain a lighter fraction and a heavier fraction. A demethanization feed stream is formed by combining at least a portion of the lighter fraction and at least a portion of the second product stream and is subjected at least in part to demethanization. Partial oxygen removal is carried out during the formation of the demethanization feed stream. The oxygen removal is carried out downstream of the combining step.

The invention relates to the technical field of heavy oil product treatment, in particular to a method and device for co-production of a carbon material through molten salt pyrolysis of a liquid oil product, and the method comprises the following steps: the liquid heavy oil product is put into an electric heating molten salt reactor through a continuous feeding system, and the molten salt reactor is filled with a molten alkaline molten salt medium; carrying out catalytic pyrolysis reaction on the oil product in a liquid phase environment of the molten salt medium, wherein the oil product stays in the molten salt for 5-10 seconds; the liquid oil product is uniformly cracked in the liquid phase of the molten salt to generate low-carbon hydrocarbon gas, hydrogen and dispersed fine carbon particles, and the carbon particles suspend on the surface under the buoyancy action of the molten salt and are not deposited and gathered; suspended carbon particles are collected from the surface of the fused salt in real time through a mechanical push rod continuous collection system; according to the method, continuous and stable pyrolysis of the heavy oil product and efficient and continuous separation of the product can be realized in the liquid-phase molten salt environment, the production efficiency is improved, and the stability of the product quality is ensured.

A rotary bladed apparatus (100) for processing feedstocks in a process fluid is provided, said apparatus comprises means for adjusting position of a working blade cascade of the rotor (3) relative to stator components (2, 4) in a longitudinal direction of a rotor shaft (1). Adjustment is performed through axial displacement of the rotor (3) or, alternatively, through axial displacement of the reactor housing (22 A, 32A). A method for improving process efficiency and for regulating flow losses during processing of feedstocks in a process fluid, in particular, in off-design conditions in the bladed apparatus (100) is further provided. In embodiments, processing of feedstocks includes thermal- or thermochemical cracking of hydrocarbon-containing feedstock.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The invention relates to the field of needle coke production, and discloses needle coke as well as a preparation method and application thereof. The strength of the needle coke is 25-34%; the thermal expansion coefficient of the needle coke is 0.8 * 10 <-6 > / DEG C to 1.2 * 10 <-6 > / DEG C; in the microstructure of the needle coke, the content of the mosaic structure is 0.1%-10%; the content of the small sheet structures is 10%-30%; the content of the large sheet structure is 15-40%; the content of the fine fiber structure is 10%-45%; and the content of the crude fiber structure is 10-45%. The needle coke provided by the invention has better optical structure, thermal expansion coefficient and strength, and is suitable for producing large-diameter and ultrahigh-power graphite electrodes and graphite electrode joints.

Recycled content liquified pyrolysis gas (r-LPyG) is produced using a process and system that optimizes the production, separation, liquification, storage, loading, and / or transporting of gases generated from the pyrolysis of waste plastic. The r-LPyG can be utilized in a variety of end use applications, including as a raw material for other chemicals and chemical intermediates.

Processes and facilities for providing recycled content hydrocarbon products (r-products) from the pyrolysis of waste plastic and cracking of the resulting recycled content streams are provided. Processing schemes are described herein that reduce overall water consumption, which helps increase energy efficiency and minimize overall environmental impact of the facility, while producing valuable final products from chemically recycled waste plastic.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

The present invention relates to the field of flue gas nitrogen oxide emission, and in particular to a method and a combustion system for reducing nitrogen oxide emission. Introducing non-nitrogen inert gas as a combustion diluent to establish ignition; when the amount of circulation flue gas reaches a designed value, the introduction of the non-nitrogen inert gaseous diluent is stopped; and by means of circulation of a part of flue gas and a part of CO2 in the flue gas, the internal circulation of the whole process system is ensured. The present invention achieves the objectives of reducing the nitrogen oxide emission and saving the fuel, thereby saving the energy, protecting the environment, fundamentally solving the emission problem of NOx in the flue gas, and achieving carbon reduction.

Processes and systems for making recycle content hydrocarbons, including olefins, from recycled waste material. Recycle waste material may be pyrolyzed to form recycle content pyrolysis oil composition (r-pyoil), at least a portion of which may then be cracked to form a recycle content olefin composition (r-olefin). The r-olefin may then be further separated into product streams in a separation zone downstream of the cracker furnace. The presence of recycle content hydrocarbons may facilitate more efficient operation of one or more distillation columns in the separation zone, including the propylene fractionator.

This invention relates to the processing of plastics materials for re-use and valorisation in chemical recycling processes for the re-use of substantially plastics materials otherwise destined for disposal.In particular the invention relates to a process for the pyrolysis of substantially plastics material to obtain at least liquid hydrocarbons that are in the liquid state at 25° C. comprising the following steps:a) feeding the substantially plastics material optionally already in the molten and / or preheated state to a pyrolysis reactor;b) bringing said material in said pyrolysis reactor to a temperature of between 330° C. and 580° C. in the substantial absence of oxygen and at a pressure of between atmospheric pressure and 13 bar (a);c) holding said material in said pyrolysis reactor at a temperature of between 330° C. and 580° C. for a time sufficient to produce at least one effluent in the gaseous state in said pyrolysis reactor;d) adjusting the pressure in said pyrolysis reactor in relation to characteristic parameters defined by the composition of said substantially plastics material and / or characteristic parameters defined by the products of said pyrolysis process, while maintaining said pressure at a value of between atmospheric pressure and 13 bar (a);e) partly or totally condensing said effluent in the gaseous state so as to form at least one fluid comprising liquid hydrocarbons that are in the liquid state at 25° C. which quantitatively is at least 10% by mass with respect to the mass of substantially plastics material fed;f) the process being characterized by the fact that the pressure adjustment of step d) has low latency.

The present disclosure generally relates to systems and methods utilizing regenerative agriculture for the procurement, production, refinement and / or transformation of low carbon intensity transportation fuels, including low carbon intensity biodiesel and / or renewable diesel, low carbon intensity biogasoline, low carbon intensity aviation, marine and kerosene fuels as well as fuel oil blends, low carbon intensity ethanol, and low carbon intensity hydrogen, that may be beneficially commercialized directly to consumers. In further aspects, the systems and methods of the present disclosure advantageously generate low carbon intensity comestibles, including sustainably-sourced meal and / or feed. The disclosed systems and methods may be utilized and optimized such that the resulting fuels and foodstuffs are characterized by a reduction in greenhouse gas production and a diminution in the fertilizer, pesticide and water required for producing the associated crop feedstocks.

This specification describes a fluid heating device and its uses. The fluid heating device can solve problems of conventional fluid heating devices. For example, the fluid heating device can efficiently support carbon neutrality. The fluid heating device can transfer precisely controlled heat to the fluid within a short period of time, for example, when heating a large amount of fluid. This specification also describes a method of heating a fluid using the fluid heating device.

Processes, reactors, and systems for converting waste plastic feedstock into liquid and gaseous products suitable for use in either fluid catalytic cracking or steam cracking to produce ethylene and propylene are described.

Provided is a continuous process for converting waste plastics to recycle for polyethylene polymerization. The process includes the steps of selecting a waste plastic comprising polyethylene and / or polypropylene, and preparing a blend of petroleum and the selected plastic. The amount of plastic in the blend comprises less than 20 wt% of the blend. The blend is passed to a refinery / hydrocracking unit. Liquefied petroleum gas C 3 -C 4 The olefin / paraffin mixture, and optionally naphtha, is recovered from the hydrocracking unit and passed to a steam cracker for ethylene production. A heavy fraction is also recovered from the hydrocracking unit and may be passed to an isomerization dewaxing unit to prepare base oil.

Provided is a continuous process for converting waste plastics to recycle for polypropylene polymerization. The process includes the steps of selecting waste plastics comprising polyethylene and / or polypropylene, and preparing a stable blend of petroleum and the selected plastics. The amount of plastics in the blend constitutes less than 20 wt% of the blend. The blend is passed to a refinery-hydrocracking unit. A liquefied petroleum gas C3 olefin / paraffin mixture is recovered from the hydrocracking unit. The C3 paraffins and C3 olefins are separated into different fractions, the C3 olefin fraction is passed to a propylene polymerization reactor, and the C3 paraffin fraction is optionally passed to a dehydrogenation unit to produce additional propylene. A heavy fraction is also recovered from the hydrocracking unit and can be passed to an isomerization dewaxing unit to prepare base oil.

Integrated processes for upgrading a hydrocarbon condensate stream to enhanced value streams including splitting a desalted feed stream into a light cut, a middle cut, and a heavy cut. The light cut is provided to a steam cracker unit to generate a steam cracked gas stream, a C4+ hydrocarbon stream, and a C9+ hydrocarbon stream, the middle cut is provided to a first catalytic cracker unit to generate a first cracked product stream, and the heavy cut is provided to a second catalytic cracker unit to generate a second cracked product stream. The steam cracked gas stream is provided to an olefins separation unit to generate at least one light olefin stream. Other effluents from the olefins separation unit and the steam cracker unit are provided to a hydrogenation unit, an aromatic extraction unit, or recycled within the system.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Processing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); c) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the steamcracking product stream (42) is included in the oligomerization feed (8).

The utility model relates to the technical field of cracking furnace tubes, and discloses a novel cracking furnace tube which comprises a cracking furnace pipeline and an annular ultrasonic transducer, the ultrasonic transducer is movably sleeved on the outer wall of the cracking furnace pipeline, the ultrasonic transducer is matched with the outer wall of the cracking furnace pipeline, and the cracking furnace tube is arranged on the cracking furnace pipeline. And two sets of limiting connecting plates are fixedly installed on the outer wall of the cracking furnace pipeline, height adjusting screw rods are rotationally installed on the wall faces, close to each other, of the two sets of limiting connecting plates, and a connecting block is fixedly installed on the outer wall of the front side of the ultrasonic transducer. Mechanical energy is generated through an ultrasonic transducer, coke attached to the inner side wall of a furnace tube cracking furnace pipeline is reduced, meanwhile, a power source of a driving motor is started, transmission gears can rotate in different directions according to different rotation directions of the output end of the driving motor, and a movable lantern ring can move forwards and backwards under cooperation of the two transmission gears; and the movable lantern ring can move up and down along the outer wall of the height adjusting screw rod.

Processes and facilities for providing recycled content hydrocarbon products (r-products) from the pyrolysis of waste plastic and cracking of the resulting recycled content streams are provided. Processing schemes are described herein that increase energy efficiency and help reduce overall environmental impact while producing valuable final products from chemically recycled waste plastic.

The invention belongs to the technical field of alkane cracking processes, and provides an alkane raw material treatment device and method capable of efficiently recycling raw material cold energy, the alkane raw material treatment device comprises a gasification assembly, the gasification assembly comprises a throttle valve, the discharge end of the throttle valve is communicated with a cold end flow channel of a cold energy heat exchanger, and a hot end flow channel of the cold energy heat exchanger is circularly connected with a cold energy user; the gas-liquid separation assembly comprises a gas-liquid separation tank, a gas phase outlet of the gas-liquid separation tank is communicated with compression equipment, and a liquid phase outlet of the gas-liquid separation tank is communicated with a liquid alkane vaporizer; the raw material heating assembly comprises a raw material superheater, a feeding port of the raw material superheater is communicated with a discharging port of the compression equipment, and a discharging port of the raw material superheater is communicated with follow-up processing equipment. In the alkane gasification process, the alkane cooling capacity can be efficiently and stably recycled and utilized, and the purposes of reducing cost and improving efficiency can be achieved.

A recycle content ethylene is fed to a reactor to make propionaldehyde having recycle content. The recycle ethylene feedstock is derived directly or indirectly from the cracking of recycle content pyrolysis oil. The cracking of the pyrolysis oil can be conducted in a gas furnace or a split furnace.

A method for processing chemicals may include passing a hydrocarbon feed stream through an inlet of a tubular reactor positioned at least partially within an enclosure. The enclosure may include at least one heating element positioned between an interior surface of the side wall of the enclosure and an exterior surface of the wall of the tubular reactor. The method includes passing a first electrical current through the wall of the tubular reactor to heat at least a portion of the wall of the tubular reactor, and passing a second electrical current through the heating element to heat the heating element such that heat transfers from the heating element to the wall of the tubular reactor. The method includes reacting at least a portion of the hydrocarbon feed stream within the tubular reactor to form a product stream, and passing the product stream through the outlet of the tubular reactor.

The invention relates to the field of cracking, and discloses a direct electric heating cracking furnace, application and a method for preparing olefin through cracking, the cracking furnace comprises a preheating section, a cracking section and a post-treatment section, and the cracking section adopts a metal furnace tube with resistance gradually reduced in the material flowing direction; the metal furnace tube is directly connected with the electric heating component; the preheating section is used for preheating cracking raw materials and diluting steam; the cracking section is used for cracking the preheated cracking raw material in the presence of the preheated steam; and the post-treatment section is used for cooling and separating the cracking product. According to the direct electric heating cracking furnace disclosed by the invention, heat is directly generated from the heated metal furnace tube instead of being transmitted from the outside through heat radiation, so that the thermal efficiency is high, the heat loss is small, the heating speed is high, the cracking preparation of low-carbon olefin is facilitated, and each product has relatively high yield.